Devstral 2 API

Access Devstral 2 from Mistral AI using Puter.js AI API.

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Model Card

Devstral 2 is a 123B parameter dense transformer coding model achieving 72.2% on SWE-bench Verified with 256K context. Released under modified MIT license, it's the state-of-the-art open model for code agents, 7x more cost-efficient than Claude Sonnet.

Context Window N/A

tokens

Max Output 66K

tokens

Input Cost $0.4

per million tokens

Output Cost $2

per million tokens

Release Date Dec 1, 2025

 

API Usage Example

Add Devstral 2 to your app with just a few lines of code.
No API keys, no backend, no configuration required.

// npm install @heyputer/puter.js
import { puter } from '@heyputer/puter.js';

puter.ai.chat("Explain quantum computing in simple terms", {
    model: "mistralai/devstral-2512"
}).then(response => {
    document.body.innerHTML = response.message.content;
});

<html>
<body>
    <script src="https://js.puter.com/v2/"></script>
    <script>
        puter.ai.chat("Explain quantum computing in simple terms", {
            model: "mistralai/devstral-2512"
        }).then(response => {
            document.body.innerHTML = response.message.content;
        });
    </script>
</body>
</html>

View full documentation →

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Frequently Asked Questions

What is this Devstral 2 API about?

The Devstral 2 API gives you access to Mistral AI's chat model through Puter.js. With just a few lines of JavaScript, you can integrate Devstral 2 into any web app or Node.js project — no API keys, no backend, and no configuration required.

Who created Devstral 2?

Devstral 2 was created by Mistral AI and released on Dec 1, 2025.

What is the max output length of Devstral 2?

Devstral 2 can generate up to 66K tokens in a single response.

How much does it cost?
The Devstral 2 API is available through the User-Pays Model. As a developer, you can add the Devstral 2 API to your app for free — your users pay for their own AI costs directly.
Price per 1M tokens
Input$0.4
Output$2
How do I access the Devstral 2 API?

You can access the Devstral 2 API with just a few lines of JavaScript — no API keys, no backend, and no configuration required. Include the Puter.js library in your project and start making calls right away. For more details, check out our documentation.

Does the Devstral 2 API work with React / Vue / Vanilla JS / Node / etc.?

Yes — the Devstral 2 API works with any JavaScript framework, Node.js, or plain HTML through Puter.js. Just include the library and start building. See the documentation for more details.

Get started with Puter.js

Add Devstral 2 to your app without worrying about API keys or setup.

Read the Docs View Tutorials